How to write an inquiry form for air-conditioning boxes so that different quotes can be compared?

To make the quotations of different air-conditioning boxes comparable, the inquiry form should unify the performance conditions, configuration boundaries, site conditions, data requirements and commercial delivery scope. The assumption that the manufacturer makes up for it by itself must be stated separately, otherwise even if the model and air volume are similar, the quotation may correspond to different equipment and on-site workload.

Give all inquiry parties five inputs of the same version

First provide the air volume, pressure definition, air inlet and outlet status, and cold and heat sources, then list the functional sections and material requirements, and then clarify the installation dimensions and maintenance direction. Finally, indicate whether control cabinets, valves, freight, installation and debugging cooperation are included. Keep clarification sheets for undetermined parameters to avoid different suppliers quoting based on different assumptions.

The common working conditions require the same air volume pressure, air state and energy conditions; the common scope requires functional sections, materials, accessories, electrical control and division of work; the common delivery requires drawing records, packaging and transportation and on-site cooperation requirements. Only after the three items are unified can the quotations have a basis for horizontal comparison. What information should be prepared before selection, please refer toWhat project information should be prepared before selecting an air-conditioning box?。

Performance and pressure caliber must be written clearly

The air volume should indicate whether it is supply air volume, fresh air volume, return air volume or mixed air volume, and the pressure should indicate whether it is external static pressure, full pressure or static pressure. Values ​​of different calibers cannot be directly compared, please refer toWhat is the difference between static pressure, total pressure and static pressure outside the air conditioner box? . The air inlet and outlet status must state the temperature, moisture content and whether it is dehumidified or humidified. How to select a surface cooler based on the air inlet and outlet status? Please refer toHow to select the type of air conditioner cooler according to the air inlet and outlet conditions?。

Cold and heat source conditions include supply and return water temperature, flow rate, pressure and medium, please refer toWhat water parameters should be confirmed before connecting the air conditioning box to the cold water system? . When the air volume units are inconsistent, you can refer toHow to convert the air volume unit of air conditioning box in m³/h, L/s and CFM?。

Configuration boundaries should be itemized

The functional section composition, filter level, coil row number, fan form, box board structure, control range and maintenance method should all be listed in the inquiry form or the optional range should be provided. Just writing 'according to conventional configuration' will allow different manufacturers to quote according to their own understanding. How to configure filter classification, please refer toHow to configure the primary-efficiency and medium-efficiency filters of air-conditioning boxes in different stages? . For comparison of fan types, please refer toHow do the backward-inclined and forward-inclined fans compare when used in air conditioning boxes?。

How to determine the structure and thickness of the box board, please refer toWhat indicators should be used to determine the thickness of air conditioning box panels? . For control point table and interface requirements, please refer toWhat point tables need to be provided before the air-conditioning box is connected to the building automation system?。

Site conditions and delivery scope should be unified

The installation space, transportation channels, foundation height, maintenance direction and drainage conditions will all affect the equipment structure and on-site workload. Horizontal and vertical types require different space, please refer toWhat kind of space do horizontal air-conditioning boxes and vertical air-conditioning boxes require? . How to leave the maintenance side when arranging against the wall? Please refer toWhen a horizontal air conditioning box is placed against a wall, which side should be left for inspection?。

For the workload of segmented transportation and on-site assembly, please refer toHow to choose between combined and integrated air conditioning boxes? andHow to identify the assembly sequence for segmented transportation of combined air-conditioning boxes? . Whether freight, hoisting, installation and commissioning cooperation are included should also be stated in the same column.

Information requirements must be written into the inquiry form in advance

What drawings, calculations, material documents, testing data and operation and maintenance instructions are required from the manufacturer should be stated during the inquiry stage. How to list applicable standards, please refer toWhat applicable standards should be listed in the technical documents for purchasing air-conditioning boxes? . For the difference between box test and complete machine performance test, please refer toWhat is the difference between the air conditioning box body test and the complete machine performance test?。

If the information requirements are not clearly stated, certain documents may not be included in the quotation by default, and subsequent supplements will increase costs and time. When third-party testing or specific certification is required, the subject matter, scope, and cost responsibilities should be stated.

How to check horizontally after receiving a quotation

Divide the differences into three categories: satisfied, biased and unexplained. First clarify the missing items and then compare prices. For alternatives, the reason and impact of the change should be explained, and the low price after the reduced configuration should not be regarded as an equal advantage. The final technical version and the quotation version should correspond to each other to prevent purchase orders from citing expired information.

What configurations do quotation differences usually come from? Please refer toWhat configurations do the price differences for air conditioning boxes usually come from? . When comparing, you should also unify the warranty, delivery, payment and after-sales conditions to avoid comparing only the unit price of the equipment.

Aili industrial supporting equipment

When inquiring from Aili Industrial, technical inputs can be provided along with the scope sheet, and a point-by-point response can be requested so that configuration and delivery responsibilities can be clearly checked. Aili Industry can provide selection responses around the configuration of air handling units and fan boxes; the manufacturing end covers independent research and development and production of motors and fans, control systems, sheet metal, air filters and complete machine assembly. Functional segments, control ranges and delivery materials can be corresponded in the same response form.

Product form can be viewedAir handling unit andFan box page; clean air supply package can be combinedFFU fan filter unit andEFU equipment end fan filter unit verification; terminal particle filtration can be combinedHEPA/ULPA filter confirmation; when it comes to gaseous pollution control, you can communicate separatelyChemical filter solutions. The specific configuration, price and delivery scope still need to be confirmed based on the corresponding quotation information and project conditions.

Submit project parameters:https://ailigy.com/contactus.html

Related questions and answers

Only the air volume and cooling capacity are given. Can the quotes be compared?
not enough. The pressure caliber, air inlet and outlet status, cold and heat source conditions, configuration boundaries and delivery scope are also required, otherwise different manufacturers will quote based on different assumptions.

Is a lower quote necessarily a better deal?
uncertain. It depends on whether the configuration is reduced, whether the scope is narrowed, whether the data and debugging are included, and comparisons should be made under the same caliber.

Can Aili Industrial respond to the inquiry order item by item?
Configuration and delivery responsibilities can be checked item by item based on technical input and scope sheets. Specific responses need to be confirmed based on project inquiry documents and product information.

Related articles

1. What project information should be prepared before selecting an air-conditioning box?

2. What configurations do the price differences for air conditioning boxes usually come from?

3. What applicable standards should be listed in the technical documents for purchasing air-conditioning boxes?

4. How to choose between combined and integrated air conditioning boxes?

Key points for selection and acceptance inspection